Asian Journal of Soil Science and Plant Nutrition
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The Efficiency of Calcium Boron and Carpox-K Sprays on Fruit Quality of Washington Navel Orange Trees
No full textThis research was conducted during seasons 2018 & 2019 on nine-years-old Washington navel orange trees. These trees were grafted on Sour orange rootstock, planted at 5 x 5 meters apart, under surface irrigation conditions, in a private orchard at Manzala village, Toukh region, Qalubia Governorate, Egypt. The seven treatments were used for comparison as follows: T1-100% of chemical NPK (NPK fertilization program adopted at 5, 3 and 1 kg/tree from (NH4)2SO4, superphosphate and K2SO4, respectively) according to the Ministry of Agriculture Recommendation (Control or recommended doses RD). T2-RD+Calcium boron 2 cm3 /L; T3-RD+Calcium boron 3 cm3/L; T4-RD+Carpox-K 1g/L; T5-RD+Carpox-K 1.5g/L; T6-RD+Calcium boron 2 cm3 /L +Carpox-K 1g/L, and T7-RD+Calcium boron 3 cm3/L +Carpox-K 1.5g/L. The main goal of this investigation was directed towards increasing Washington navel orange fruit quality. The obtained data revealed that all investigated treatments increased fruit quality parameters (physical and chemical properties). However, T7- RD + Calcium boron 3 cm3 /L + Carpox-K 1.5g/L was statistically superior. On the contrary, T1- Control or recommended doses (RD) ranked statistically the lowest treatment in this concern. From the obtained results, It can be concluded that the use of RD+ Calcium boron 3 cm3 / L + Carpox-K 1.5g / L or RD+ Calcium boron 2 cm3/ L + Carpox-K 1g / L could be safely recommended under similar environmental and horticultural practises adopted in this experiment
Amelioration of Salt Affected Soils and Improvement of Rice and Wheat Yields by Adding Compost and Foliar Spray of Zinc, Potassium and Compost Tea
No full textAmelioration of salt-affected soils requires an integrated management approach, by eco-friendly environmental methods which help improve soil properties, increases crop yield and quality. Hence, a study was done to evaluate the performances of combined use of compost and foliar application of Zn, K and compost tea. In salt affected soil in the rice-wheat system. A field experiment at El Hamool district, Kafr El Sheikh governorate, Egypt was carried out during 2019 summer for rice and 2020 winter season for wheat. A split plot design with three replicates was performed. The main plots were occupied by levels of compost: C1 (2MgFed.-1), C2 (4MgFed.-1) and C3 (6MgFed.-1), (Fed= 0.41ha). Whereas, sub-plots were foliar application: control (T1), Zinc sulphate (T2), Mono potassium phosphate (T3), compost tea (T4), Zinc + potassium (T5), zinc + compost tea (T6), potassium + CT (T7) and Zn + PK + CT (T8). ECe and SAR) were significant decreased due to application of compost up to C3 (6MgFed.-1) while CEC and organic carbon were significantly increased by compost application, C3(6MgFed.-1). The highest results were recorded due to use of Zn+PK+CT and compost. The grain and straw yields of both rice and wheat were markedly increased due to application of compost and foliar nutrients. The highest values were noted with the interaction of C3 am and T8.Nitrogen uptake, N use efficiency and N-recovery for both rice and wheat were considerably increased due to application of compost and foliar treatments, the highest performance being observed in C3 coupled with T8
Granulometric Evolution of Soils in Response to Their Fertilization with Crushed Rocks: Case Study of the Western Highlands Andosols Treated with Trachyte Powder
No full textThe present paper aims to highlight the consequence of the fertilization of soils with rock powder on their granulometric evolution. For that purpose, Andosols developed on trachyte in the upper part of the southern limb of the Bambouto Mountains were fertilized with trachyte powder at different rates, activated with water and incubated during nine months. The different treatments generate the granulometric evolution of soils. The increasing of the amounts of trachyte powder as same as the duration of the incubation process makes the evolution more significant. In the detail, that treatment induces the enrichment of the treated soils in silts particles in the expense of clay and sands. At the end of the process, soils with high amounts of sands and silts in general are engendered. The use of rock powder as fertilizers must be gainfully preceded by the acquisition of informations concerning their amounts in organic matters. In case of low amounts, a supply with organic fertilizers would be necessary
Enhancing Growth, Yield Components and Chemical Constituents of Chilli (Capsicum annuum L.) Plants by Using Different NPK Fertilization Levels and Nano-Micronutrients Rates
No full textThe application of Nano micronutrient fertilizers could improve nutrient use efficiency that reduces the dosage of NPK fertilizers. This study aims to find out the best combination of NPK and Nano micronutrients fertilizers on growth, yield and quality of red hot chilli pepper. A field study was conducted on chilli (Capsicum annuum L.) fertilized by different NPK fertilization levels (0.0, 50, 75 and 100% of recommended levels) and sprayed by different Nano micronutrients rates (0.0, 0.25 and 0.50 g/l) during the two summer consecutive seasons of 2017 and 2018 at Agriculture Research. Farm (Ghazala Farm), Faculty of Agriculture., Zagazig University., Egypt, The recommended dosage was 218. N+ 36 P +142 K kg/ha and Nano-micronutrient fertilizer that was used contained (6% Fe, 6% Zn, % B, 5% Mn, 1% Cu and 0.1% Mo). The experimental design was a split-plot arranged in a three replicates. The main plots were assigned for four NPK fertilization levels and sub plot were devoted for three Nano-micronutrients rates. The results pointed out that the vegetative growth significantly increased by NPK fertilization at 100 or 75% RLs as well as Nano-micronutrients at 0.5 g/l rate and in combination compared to control (0NPK, 0 Nano-micronutrients). Yield components and chemical constituents were increased gradually by increased NPK fertilizers levels during the two seasons. The best combination treatment in this connection was 100% RLs of NPK fertilizers combined with 0.5 g/l of Nano-micronutrients compared to the other ones under study that increased the yield and capsaicin by 75% of NPK and 0.5 g/l of Nano than control, respectively
Response of BARI Bush Bean-2 at Different Levels of Nitrogen Fertilization
No full textA field experiment was carried out at Sher-e-Bangla Agricultural University Research Farm during the Rabi season of 2008 to investigate the response of BARI Bush Bean-2 at different levels of nitrogen fertilization in respect of various yield components. The soil of the experimental area belongs to the ModhupurTract (AEZ No. 28) which had shallow red brown terrace soil. The selected plot was medium highland and the soil series was Tejgaon. The experiment was laid out in a RCBD design with three replications. The experiment comprises 4 levels of nitrogen in the form urea (0, 40, 80 and 120 kg ha-1 N). The results obtained revealed that different levels of nitrogen showed significant variations on the different parameters studied. Among the different treatments of the study the treatment N80 (80 kg N) gave the highest pod length (11.15 cm), pod diameter (2.93 cm), average single pod weight (5.42 g), total pod weight plant-1 (25.63 g), pod yield plot-1 (1789.58 g) and pod yield hectare-1 (4.37 ton). Thus the findings of the experiment revealed that the use of 80 kg N maximally influence the yield and yield contributing characters of BARI Bush Bean-2 in the selected red brown terrace soil of the Tejgaon series
Impact of Some Natural Extracts and Nutrients on Different Growth Measurements of Washington Navel Orange Transplants
No full textThis study was conducted throughout the two successive seasons of 2018 and 2019 at Fruit Nursery of Horticulture Department, Faculty of Agriculture at Moshtohor, Benha University Qalubia Governorate, Egypt., to study the impact of some natural treatments, i.e., Algae, Yeast extract, Moringa leaves extract and nutrients as compound that containing both macro (N, P, K) and micro (Fe, Zn, Mn, Fe, Cu) elements and compound containing macro and microelements and some growth regulators. These materials (natural extracts and nutrients) were applied as a foliar spray at different concentrations to evaluate their effect on different growth parameters of one year old Washington navel orange transplants budded on sour orange rootstock. These materials were applied once in a month started from the last week in April to the last week in September .as per the treatment as: Blue-green algae extract (1, 2 and 3 ml/L), Yeast extract (10, 20 and 30 ml/L), Moringa leaves extract (2.5, 5 and 7.5 g/L). Nitro active 20: 20: 20 (commercial grade) (0.5, 1 and 1.5 g/L) and Estima green (commercial grade) (0.5, 1 and 1.5 g/L). The result indicated that the application of Blue-green algae at 3 ml/L and Estima green at 0.5g/L cause a significant increase in the different growth parameters under this study i.e., length, diameter, number of leaves, leaf area, fresh and dry weights. On the contrary, the least values of the abovementioned parameters were usually in concomitant to T1 - control (water sprayed) which ranked statistically last during both seasons of study
The Effect of Si Fertilizer and Si Fertilizer with Straw Return on Soil K Availability and Grain Yield on Spring Maize (Zea mays L) in Northeast China
No full textAims: To investigate the effect of silicon (Si) fertilizer and Si fertilizer with straw return in potassium (K) and maize grain yield.
Methods: In 2018 and 2019, two field experiments were established in Nong’an county, Jilin province. Four treatments were arranged in a randomized block design: JS3 (straw return + Si), WS3 (no straw return + Si), JS0 (straw return + no Si) and WS0 (no straw return + no Si).
Results: In comparison with WS3, the average soil available K for WS0 was 22.1% lower. Similarly, compared with JS3, the average soil available K for WS3 was even decreased by 3.1%. The plots amended with Si fertilizer (15.9% WS3) significantly increased K uptake than that of WS0, and the total uptake of K under JS3 increased by 7.5% compared with that under WS3. The total dry matter and grain yield were significantly higher under WS3, which increased by 6.5% and 4.8% respectively, and JS3 significantly outperformed WS3 by 2.9% and 1.3% for total dry matter and grain yield.
Conclusions: Our results indicate that the application of Si fertilizer improves K availability, uptake and crop yield, and the use of Si fertilizer with straw return sustainably improves K release to meet crop requirements while increasing crop productivity
The Effect of Microbe Plus and Phosphorus Fertilizers on the Vegetative Growth of Oil Palm (Elaesis guineensis, Jacq.) Seedlings
No full textThe main objective of this study was to improve the growth of oil palm seedlings by using microbe plus to enhance phosphorous availability from rock phosphate under oil palm nursery was evaluated at Oil Palm Research Institute of Ghana, Kade-Kumasi. The study consisted of 16 treatments replicated 3 times in a 4 × 4 factorial experiment arranged in Randomize Complete Block Design. The factors tested were: Phosphate fertilizers (Phosphate only, triple superphosphate, super rock phosphate and Togo rock phosphate) and microbe plus rates (0, 50, 100 and 150%). Data was collected on leaf area, leaf area index and dry matter production. All data obtained were subjected to analysis of variance (ANOVA) using GENSTAT Version 11.1 (2008). The results showed that the P fertilizers and microbe plus applied alone or their interactions had no significant (P=.05) effect on leaf area and leaf area index values, however, dry matter produced was significantly (P=.05) different from each other. TSPMP150 treated seedlings produced significantly (P=.05) the highest dry weight; 42% increase over the control (No phosphate and microbe plus). The complementary use of microbe plus with triple superphosphate or Senegal rock phosphate proved to be the best options in terms of the parameters measured than the triple superphosphate. Microbe plus can therefore be used in combination with rock phosphate to improve phosphate availability. Field experiment is suggested to validate the effect of microbe plus and these rock phosphates on the performance of oil palm, whereas, additional studies with different application rates, both at nursery and at the field, are recommended
Effects of Liming on Dithionate and Oxalate Extractable Aluminium in Acid Soils
No full textLiming and phosphorus (P) applications are recommended practices for improving crop production in acid soils of the tropics. Although considerable work has been done to establish liming rates for acid soils in many parts of the world, information on the effects of lime on the forms of aluminium which actively sorb P in such soils is minimal. A greenhouse pot experiment was conducted at Waruhiu Farmers Training Centre, Githunguri to evaluate the effect of liming on oxalate and dithionate extractable aluminium in acid soils. Extremely (pH 4.48) and strongly (pH 4.59) acidic soils were evaluated. Four liming (CaO) rates namely 0, 2.2, 5.2 and 7.4 tonnes ha-1 for extremely acidic and 0, 1.4, 3.2, and 4.5 tonnes ha-1 for strongly acidic soils were evaluated. The experiment was laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Data collected included: initial soil chemical properties, oxalate (Alo) and dithionate (Ald) aluminium levels. The tested soils had high exchangeable Al (> 2 cmol Al kg-1), Al saturation of (> 20% Al) and low extractable P values (< 15 mg P kg-1 soil). Liming significantly (p=.05) reduced Alo by 70% and 68% in extremely and strongly acidic soils respectively and Ald by 78% in both extremely and strongly acidic soils compared to control. Use of 7.4 tonnes ha-1 of lime in extremely acidic soils and 4.5 tonnes ha-1 of lime in strongly acidic soils significantly (p=.05) reduced both Alo and Ald by > 68% compared to no lime. It was, therefore, concluded that liming contributes to the reduction of soluble Alo and Ald in acid soils of the Kenya highlands leading to increased soluble P availability. Studies are required to provide short and long term optimal liming rates that reduce Alo and Ald without distabilizing availability of other nutrients in field conditions under wide range of acid soils
Effects of Different Levels of Phosphorous and Zinc Fertilizers on the Yield and Nutrient Uptake of Maize (Zea mays L.) on Luvisols in Northern Guinea Savannah Region of Nigeria
No full textThe study aimed to determine the effects of different levels of phosphorous and zinc fertilizers on the yield and nutrient uptake of maize (Zea mays L.) The experiments were conducted in a factorial experiment under Randomized Complete Block Design (RCBD) to determine the effect of P and Zn applications on TZL white composite improved variety of maize. Four levels of phosphorus (0, 10, 20 and 30 kg P ha-1) and three levels of zinc (0, 5 and 10kg Zn ha-1) were applied on experimental plots of 4.5m x 5m replicated thrice. The results shows no significant differences in both the years however, highest mean values of 2327.5 kg ha-1 and 2191.5 kg ha-1 was recorded at 20 kg P ha-1 and 10 kg Zn ha-1 Application of P and Zn at different rates increases their uptake in the stover with highest values of 22.57 mg -1 kg and 7.8 mg -1 kg in 2018 at 30 kg Pha-1 and 18.40 mg -1 kg and 5.21 mg -1 kg at 20 kg Pha-1 in 2019. While 26.54 mg -1 kg and 21.85 mg -1 kg in 2018 at 10 kg Znha-1 and 6.76 mg -1 kg and 5.27 mg -1 kg in 2019 with 0 kg Znha-1 respectively. It is therefore recommended the best results of the application of 30kg P ha-1 and 10 kg Zn ha -1 should be adopted for optimum yield of maize