Dynamics of cropland soil organic carbon (SOC) in response to different management practices and environmental conditions across North China Plain (NCP) were studied using a modeling approach. We identified the key variables driving SOC changes at a high spatial resolution (10 km × 10 km) and long time scale (90 years). The model used future climatic data from the FGOALS model based on four fut...

Nghiên cứu nhằm đánh giá ảnh hưởng của thời vụ trồng, khoảng cách, độ che sáng và lượng đạm bón đến khả năng sinh trưởng, phát triển suất cây Thường xuân nhập nội (Hedera helix L.) được trồng tại Sa Pa, Lào Cai từ đó làm cơ sở để xây dựng quy trình theo tiêu chí GACP – WHO. Thí nghiệm bố trí kiểu khối ngẫu nhiên đầy đủ (RCBD), 3 lần nhắc lại, với (15/10, 15/11 15/12), cách (20*30, 25*30, 30*30c...

the aim of this study was to determine the effects of ensiling and using of fertilizers nitrogen and phosphorus on chemical composition and ruminal dm degradability of safflower plant (carthamustinctorius l.). the safflower plant was cultivated at december 2009, and harvested at june 2010 in flowering stage, chopped to 3-5 cm particles and then ensiled in the laboratory silos for 60 days. the e...

the objective of this experiment was to determine the effects of different levels of nitrogen (n) and salinity on biochemical mechanisms of two wheat genotypes. a field experiment was carried out in a three replicate rcbd split factorial experiment in salinity station of college of agriculture, ferdowsi university of mashhad, iran in 2007-2008 and 2008-2009. three levels of salt stress (1.3, 5,...

In order to study the effect of nitrogen rate and plant density on morphological traits and essential oil and fruit yield of coriander, a split-plot experiment was carried out in research field of Islamic Azad University, Birjand Branch, Birjand, Iran in 2010 based on a randomized complete block design with three replications. The main plots were nitrogen rates at four levels (0, 40, 80 and 120...

Wheat (Triticum aestivum L.) is widely cultivated in the Mediterranean zone where plantsgenerally suffer from water stress during heading and reproductive stages. This research wascarried out at the experimental farm of the faculty of agriculture, Kafrelsheikh University usingtwo water treatments (water stress and well-watered), four N levels (0, 80, 160 and 240 kg ha-1)and two ascorbic acid le...

a field investigation was conducted to evaluate the effect of n and k fertilizers on qualitative and quantitative changes of potato tubers during five months of storage. this study was carried out in three replications at five levels (0, 60, 120, 180 and 240 kg/ha) of nitrogen and three levels (0, 75 and 150 kg/ha) of potassium fertilizer during 2004-2006. measurements were recorded monthly. th...

Nitrate nitrogen losses through subsurface drainage and crop yield are determined by multiple climatic and management variables. The combined and interactive effects of these variables, however, are poorly understood. Our objective is to predict crop yield, nitrate concentration, drainage volume, and nitrate loss in subsurface drainage from a corn (Zea mays L.) and soybean (Glycine max (L.) Mer...

A field experiment was conducted at Agricultural Research station, Anand University, Dhandhuka, Bhal region of Gujarat under conserved soil moisture condition in the rabi season 2018-19- to 2020-21 determine effect levels nitrogen and seed rate on production durum wheat with objective find out suitable level (GADW- 3) for condition. Moisture received during rainy as such. The laid randomized bl...