This paper reviews the key constraints limiting the practice of CA in tropical rainfed agroecologies. It examines evidence from research, and from widespread indigenous practice, that indicates that successful CA systems for tropical smallholders would benefit substantially from the integration of trees. It argues that Conservation Agriculture with Trees (CAWT) addresses a number of the critica...

the main objective in production of any rainfed crop, including barley farming is to increase water productivity along with stability in the production of the rainfed crop through improvement of the agronomic management including limited single irrigation (si) and sowing date (sd). in order to determine optimal si management and limited water allocation scenarios, a field experiment was conduct...

Thirty advanced breeding lines of deep-water rice were evaluated during T. Aman season (rainfed ecosystem) with a view to finding out variability and genetic association for grain yield and its component characters. All the tested characters showed significant variation. The highest genetic variability was obtained in filled grains/panicle followed by plant height. Panicles/plant, filled grains...

Despite great recent progress, hunger and poverty remain widespread and agriculturally driven environmental damage is widely prevalent. The idea of agricultural sustainability centers on the need to develop technologies and practices that do not have adverse effects on environmental goods and services, and that lead to improvements in food productivity. Here we show the extent to which 286 rece...

There are two conflicting trends to be considered when optimising crop cycles on a farm. While yield and quality increase as harvest age increases, longer crop cycles reduce the total annual area harvested, potentially reducing the farm's total production. Optimisation of crop cycles is a complex problem, which has to account for the dynamic impact of a multitude of agroclimatic and economic fa...

The partitioning of precipitation water input on land between green (evapotranspiration) and blue (runoff) fluxes distributes the annually renewable freshwater resource among sectors ecosystems. patterns main drivers this are not fully understood around global area. We decipher worldwide key determinants flux investigate its predictability based a machine learning model. Available data for 3,61...

climate change represents the major challenge to sudan agricultural production, economics and food security. changes in temperature, rainfalls, water availability, increased outbreak of pest and diseases, land degradation, soil erosion, shrinking of grazing and cultivate areas, ongoing desertification and the other aspects of climate change have direct significant impact on agricultural product...

chickpea (cicer arietinum l.) is a native crop of asia which is grown worldwide including iran.in this study,different selection criteria including correlation,regression and path analysis were used to improve yield.the experimental design was split plot with rcbd replicated four times in which three sowing dates (5 january,4 february,and 5 march) were used in main plots and four genotypes;two ...

Drought is one of the most devastating climate extremes in terms its spatial extent and intensity. Rainfed areas are extremely vulnerable to drought, but effective monitoring may lessen impact such events. This study developed a composite drought index (CDI) for assessing seasonal droughts rainfed Potwar Plateau Pakistan, using remotely sensed observed meteorological datasets. We identified fou...

This paper presents an exhaustive review of global croplands and their water use, for the end of last millennium, mapped using remote sensing and non-remote sensing approaches by world’s leading researchers on the subject. A comparison at country scale of global cropland area estimated by these studies had a high R-value of 0.89–0.94. The global cropland area estimates amongst different studies...