نتایج جستجو برای: 8285 and 17399 tons per hectare

تعداد نتایج: 16840296  

Journal: :Current Biology 2008
Nigel Williams

fossil fuels, however, would require the need to look beyond wood. Choren Industries claims that 20 million tons of straw are ploughed back into the soil each year, which could be turned into four million tons of BTL diesel, covering 14 per cent of current diesel demand. A further three to six million tons per year could be obtained from wood grown on currently unused agricultural land. Accordi...

2011
Marin Sultana Sabina Yeasmin

Onion (Allium cepa L., 2n=16) is a cross-pollinated and biennial short type vegetable and most of the important spice as well as vegetable crops throughout the world. Bulb is the main edible portion of onion plant, which is a modified organ and constituted by the thickened fleshy leaf sheaths and stem plate (Purseglove, 1988). The leading onion producing countries of the world are China, India,...

2017
Wei Yao Miaohong Ruan Lifang Qin Chuanyu Yang Rukai Chen Baoshan Chen Muqing Zhang

Sugarcane mosaic disease is mainly caused by the sugarcane mosaic virus (SCMV), which can significantly reduce stalk yield and sucrose content of sugarcane in the field. Coat protein mediated protection (CPMP) is an effective strategy to improve virus resistance. A 2-year field study was conducted to compare five independent transgenic sugarcane lines carrying the SCMV-CP gene (i.e., B2, B36, B...

ژورنال: علوم آب و خاک 2012
امیر لکزیان, , حمید دهقان منشادی, , سروش سالک گیلانی, , محمدعلی بهمنیار, ,

Biological indicators are considered soil quality elements, due to their dependence on soil organisms. In order to investigate The effect of compost and vermicompost enriched by chemical fertilizers and manure on soil organic carbon, microbial respiration, and enzymes activity in basil plant's rhizosphere, a field experiment was conducted as a split-plot design with randomized complete blocks a...

Journal: :IOP conference series 2023

Abstract The world’s population is increasing by an average of 80 million people per year, in 2025 there will be 8 billion on the planet. Republic Uzbekistan 650-670 thousand it reach 47 2026. This research was aimed at developing a scientifically based system organic fertilizers cultivation ecologically clean high-grain crops from white and red amaranth varieties plant farming method. results ...

Journal: :بوم شناسی کشاورزی 0
مهدیه زمردی شاهین شاهسونی مهدی برادران فیروزآبادی علی اصغر نادری

to study the effect of vermicompost and urea and iron sulfate fertilizers on the growth characteristics and yield of sunflower seed (helianthus annuus l.) an pediment was conducted in darreh gaz located in khorasan razavi province in 2012. factorial experiment in a randomized complete block design with three factors and three repetition. in this experiment three levels of urea (50; 150 and 250 ...

2006
H. Bruce Rinker Margaret D. Lowman

In z.n address to inaugurate the invertebrate exhibit at the National Zoo, Washington, DC on Mav 7, 1987, E.O. Wilson called insects "the little things that run the world" (Wilson 1987a). In terris of their diversity, distribution, and abundance, insects are unrivaled as a global ecolo,gical and evolutionary force. "It needs to be repeatedly stressed that invertebrates as a whole are even more ...

2006
Denis Fargette

Cassava (Munihor escuknra CrantE; Euphorbiaceae) is the only species in its genus that is cultivated as a food crop. In South America, where it originated. cassava was domesticated 2,0004,000 years B.c., yet only recently has it become distributed worldwide. The Portuguese began importing cassava into the Gulf of Guinea in Africa in the 16th century. In the 18th century, they introduced it to t...

Soil erosion is one of the environmental problems that is a threat to natural resources, agriculture and the environment, and in this regard, assessing the temporal and spatial amount of soil erosion has an effective role in management, erosion control and watershed management. The main aim of this study was to estimate soil erosion in Amoqin watershed and its relationship with well-known veget...

Hadi Chamheidar, Rozbeh Farhoudi

One of the crucial elements for livestock and human nutrition is selenium and its deficiency or toxicity can harm human and livestock health. The present study is designed with the aim of studying the effect of different levels of selenium fertilizer (Selcote-Ultra) and cow manure on the uptake of selenium in tall fescue. For this purpose, a pot experiment with complete randomized block design ...

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