1,721,040 research outputs found
Teli per pacciamatura trasparenti e biodegradabili in suolo: prime valutazioni in campo.
No full textInfluenza di differenti input energetici sulla produzione di sorgo da biomassa in Campania.
No full textValutazione agronomica e produttiva dell'utilizzo di film colorati per la copertura di uve da tavola
No full textEffect of halo-priming and hydro-priming on wheat germination irrigated with saline and non-saline water and sowed in soil at different salt levels.
No full textThe effects of salinity (water irrigation and soil) vary with crop pheno-phase and survival in germination is essential for crop growth and yield. Therefore the aim of this research was to evaluate the germination rate of wheat seeds treated with different methods of seed-priming under saline and non-saline conditions. The experiment has made at Portici during winter 2007, under a rainout-shelter and using 0.39 m2 pots. The first test was a factorial comparison between: 1) irrigation (fresh water and saline water: 12.5 dS m-1) and 2) 6 times of soaking with distilled water (hydro-priming) with sowing on non-saline soil. The second test was a factorial comparison between: 1) irrigation (fresh water and saline water: 12.5 dS m-1), 2) pre-seeding soaking with three saline solutions (halo-priming), 3) soil at four salinity levels: non-saline (NS): 0.56 mS cm-1; low (LSS): 1.12 mS cm-1; middle (MSS): 2.09 mS cm-1; high (HSS): 4.10 mS cm-1. For the hydropriming experiment, the interaction between irrigation and times of soaking was significant: with fresh water irrigation all the times of soaking determined an increase of germination rate, while with saline irrigation, only the highest times (8, 16 and 24 h) determined a significant increase of germination. Instead, halopriming did not determined favourable effects on germination. Therefore, only hydropriming has allowed to compensate the effects of reduced germination due to saline irrigations
Preliminary Results of the Use of Sowing Time and Variety Choice as Techniques of Adaptability of Durum Wheat (Triticum durum Desf.) to Temperature Increases
Full text linkIn the 21st century, global climate change is a key concern for countries all over the world as, in the future, crops will face several extreme events, including an increase of 2–4◦C in the mean temperature with a possible consequent reduction in yield. Wheat (Triticum durum Desf) is one of the most important foods as it provides 20% of the protein for the world population. Since temperature is one of the most limiting factors of crop development, the aim of this trial was to verify the agronomic response of durum wheat to a temperature increase of about 1.5–2.0◦C through the use of short-time adjustment techniques, such as sowing time and variety choice. The experiment foresaw the comparison between two different temperature conditions (ordinary, OT—in the open field, and high, HT—under a polyethylene tunnel), two sowing times (ordinary—OS, and delayed—DS), and three varieties (Ofanto, modern variety; Cappelli, traditional variety; and a mix of the two). HT conditions caused a decline in the wheat yield (−52.5%), but without differences between the two sowing times. The grain quality resulted positively when affected by late sowing times with an increase in 1000 seeds weight and protein percentages and a decrease in shrunken grains. Therefore, it seems that in areas characterized by high temperatures, delayed sowing can improve grain quality without reducing yield quantity compared to ordinary sowing times
Primi dati sperimentali sull’impiego di differenti cover crops su accrescimento e produzione di pomodorino in una zona vulnerabile da nitrati.
No full textEffetto dello stress idrico sul rapporto parte ipogea/parte epigea di tabacco allevato in vaso
No full textInfluence of different methods of seed priming on maize germination irrigated with saline water.
No full textAbout half of the irrigated soil is seriously interested from salinity and/or secondary alkalinity. Strogonov in 1964 proposed that the salt tolerance of plants could be improved with different pre-seeding treatments at the seeds. This research has evaluated the germination of maize seeds treated with different methods of priming under saline stress conditions (irrigation water and soil). The experiment has carried in Portici during the summer 2007. The cultivation has been made in a rainout-shelter, in 60 soil plastic pots with a top area of 0.39 m2. Three pre-seeding treatments on maize seeds were compared: 1) soaking with saline solutions (halo-priming); 2) soaking with distilled water (hydro-priming); 3) thermic treatment (thermo-priming). 76 seeds per pot were sowed. Three levels of soil salinity were used for halo-priming: low (LSS): 0.34 mS cm-1; middle (MSS): 0.72 mS cm-1; high (HSS): 3.69 mS cm-1. The ECw of irrigation water was 3.5 dS m-1. During the trial 11 waterings were made twice a week, with an average volume of 1.77 l pot-1. In total for every pot 19.5 l of water and 30 g of salt were given. Every three days it was made the count of germinated seeds. The seed treatments didn’t reduced the germination injury due to the irrigations with saline waters. Particularly for the halopriming the germination was further reduced by the initial soil salinity; in any case, the treatment with the middle salinity determined the greatest percentage of germinated seeds. The treatments with the highest temperatures improved the germination percentage; a similar effect was shown by the smaller duration of thermic treatment. The duration of soaking in distilled water determined positive effects on germination with increases higher than 2% per hour of soaking
Risposta di varietà di frumento duro a diverse tecniche di fertilizzazione biologica - Nota II: qualità della granella
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