نتایج جستجو برای: 12 cropping seasons

تعداد نتایج: 611308  

2010
C. Morel

Monitoring soil phosphorus (P) changes under continuous cropping over decades is an important agronomic and environmental issue. The aim was to determine soil P dynamics in the plough layer as a function of cumulative P budgets (Bcum) across extended cropping periods (7, 12, and 17 yr) for four rates of mineral P fertilization. This field experiment was established in 1975 on a slightly alkalin...

Journal: :International Journal of Enviornment and Climate Change 2023

The Field experiments were conducted to evaluate the effect of cropping systems and nutrient management practices on yield, economics pearl millet in School Agricultural Science, Karunya Institute Technology Sciences, Coimbatore, India). laid out Factorial Randomized Block Design (FRBD) with two factors (Cropping system Nutrient management) three replications for consecutive seasons 2022-23. st...

2015
Li-Jun Zhang Shengdun Zhao

In order to reduce the cropping force and enhance the cropping cross-section quality, a new type of cropping machine is proposed in this paper. The basic structure and working principle of the cropping machine are introduced. Based on D'Alembert's principle, the vibration equations of the cropping machine along the Y direction, X direction and around X, Y, Z axis are built in detail and the mot...

Journal: :Agronomy 2022

The selection of high-yielding, short-duration rice cultivars is essential for the double-rice cropping system. High hill density could be achieved with less labor under machine transplanted conditions. Therefore, dense planting more practical machine-transplanted rice. While few studies have been conducted to certify feasibility cultivar combined in current study was executed determine effects...

Understanding the structure and nature of genotype environment interaction (GEI) is important in plant breeding programs. In order to study GEI effects on the seed yield and identify stable genotypes, 12 winter rapeseed (Brassica napus L.) promising lines along with Okapi cultivar (control) were evaluated in six cold (Bojnurd, Hamedan and Arak) and temperate regions (Karaj, Kermanshah and Isfah...

2004
DWAYNE G WESTFALL

In the Great Plains of North America potential evaporation exceeds precipitation during most months of the year. About 75% of the annual precipitation is received from April through September, and is accompanied by high temperatures and low relative humidity. Dryland agriculture in the Great Plains has depended on wheat production in a wheat-fallow agroecosystem (one crop year followed by a fal...

2017
Nicolas Guilpart Patricio Grassini Victor O. Sadras Jagadish Timsina Kenneth G. Cassman

Yield gap analyses of individual crops have been used to estimate opportunities for increasing crop production at local to global scales, thus providing information crucial to food security. However, increases in crop production can also be achieved by improving cropping system yield through modification of spatial and temporal arrangement of individual crops. In this paper we define the croppi...

2016
Usman Anwar Randall K. Kolka John Tyndall Randall Kolka

Predicting the hydrologic consequences of biomass cropping systems requires an understanding of how different crops and management practices affect soil hydraulic properties across space and time. To inform such predictions, I investigated the impacts of five biomass cropping systems on the hydraulic properties of soils across a landscape gradient in wet, dry, and average rainfall years. I used...

Journal: :International Journal of Enviornment and Climate Change 2023

A field experiment was conducted during three seasons of 2019-20 at RPCAU, Pusa to evaluate the Effect Diversification on System Productivity and Profitability under North Bihar Condition. Treatment comprised cropping systems in main plots: C1 - Rice Wheat Fallow, C2 Green Gram, C3 Maize Dhaincha, C4 + Potato C5 Pea Dhaincha moisture regimes sub plots with 3 days disappearance ponded water khar...

2017
Ranjan Advani

—The results of about 12 years' study deals with rodent damage to several annual and perennial crops of India including cereal, vegetable, fruit, plantation and other cash crops. The rodent species composition in order of predominance infesting different crops and cropping patterns percent damages and cost effectiveness of rodent control operations in each crop and status of rodent management b...

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