نتایج جستجو برای: crop planting project

تعداد نتایج: 324642  

2016
Charles L. Webber Paul M. White Caleb Dalley Eric C. Petrie Ryan P. Viator James W. Shrefler

A Louisiana sugarcane field is typically replanted every four years due to declining yields, and, although, it is a costly process, it is both necessary and an opportunity to maximize the financial return during the next four year cropping cycle. Fallow planting systems (FPS) during the fallow period prior to replanting sugarcane have the potential to influence not only the following sugarcane ...

2015

• Beans are vital sources of protein, iron and other micronutrients in Rwanda and Uganda. • The average yield gain over local varieties from adopting improved bean varieties is 53% in Rwanda and 60% in Uganda. • Rwandan households planting improved bean varieties gain, on average, an extra 42 kg of the crop over local varieties per agricultural season, increasing household revenue by US$50. • F...

2009
H. Uchino S. Nakamura

Weed management is a major issue in organic farming systems. Although interseeding cover crops is one alternative to herbicides, cover crops often suppress not only weeds but also main crops. Therefore, using cover crops for weed control without adverse effects on main crop growth is important. To verify the effect of cover crops on competition between main crops, cover crops and weeds in snowy...

2015
Guanqing Jia Xiaotong Liu James C. Schnable Zhengang Niu Chunfang Wang Yuhui Li Shujun Wang Suying Wang Jinrong Liu Erhu Guo Hui Zhi Xianmin Diao

Crop improvement is a multifaceted micro-evolutionary process, involving changes in breeding approaches, planting configurations and consumption preferences of human beings. Recent research has started to identify the specific genes or genomic regions correlate to improved agronomic traits, however, an apparent blank between the genetic structure of crop elite varieties and their improving hist...

2015
Andrew Lawson Craig Cogger Andy Bary Ann-Marie Fortuna Anil Shrestha

Cover crop benefits include nitrogen accumulation and retention, weed suppression, organic matter maintenance, and reduced erosion. Organic farmers need region-specific information on winter cover crop performance to effectively integrate cover crops into their crop rotations. Our research objective was to compare cover crop seeding mixtures, planting dates, and termination dates on performance...

ژورنال: علوم آب و خاک 2006
شاهرخ زند‌پارسا, , علیرضا سپاسخواه, , ابوالفضل مجنونی هریس, , علی‌اکبر کامگار حقیقی, ,

Agricultural investigations use computer models for simulation of crop growth and field water management. By using these models, the effects of plant growth parameters on crop yields are simulated, hence, the experimental costs are reduced. In this paper, the model of MSM (Maize Simulation Model) was calibrated and validated for the prediction of maize forage production at Agricultural College,...

2004
P. R. Hobbs K. D. Sayre

This paper examines common factors that constrain wheat yields: insufficient nutrients (using nitrogen as an example); problems of late planting and poor crop establishment; suboptimal water management; lodging; and weeds. The authors suggest agronomic practices, including tillage practices, rotations, and input management options that can ameliorate important constraints and sustainably improv...

2007
Thomas F Geary

When eucalyptus trees are felled, new stems often grow from the stumps to produce another crop of trees. This new crop is called the coppice crop to distinguish it from the seedling crop. Coppice crops can be important in growing eucalypts profitably. Replanting costs are saved and coppice crop rotations are usually shorter than those of seedling crops, because coppice stems grow faster than se...

Journal: :Agronomy 2023

Increasing crop yield is a significant objective in modern agriculture, with adjusted planting density and rational fertilization strategies standing out as the foremost approaches for attaining such goal. Through use of artificial intelligence techniques genetic algorithms neural networks, CPDOS (Crop Planting Density Optimization System), an online intelligent system that can automate modelin...

Journal: :راهبردهای توسعه روستایی 0
حامد اسکندری دامنه دانشجوی کارشناسی ارشد بیابان زدایی دانشگاه تهران حسین نوروزی دانشجوی کارشناسی ارشد اقتصاد کشاورزی دانشگاه تهران حسن خسروی استادیار، دانشکده منابع طبیعی دانشگاه تهران حامد رفیعی استادیار اقتصاد کشاورزی دانشگاه تهران عمران طاهری ریکنده دانشجوی کارشناسی ارشد دانشگاه تهران

jazmoryan wetland is one of the most sensitive ecosystems in the south east of the country which is declining due to dam construction in upstream as well as deficiency of environmental water supply. the wetland seem to dry out due to its geographical location and construction of bampour diversion dam and jiroft reservoir dam on major rivers flowing to this wetland. one of the solutions proposed...

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