Rainfed wheat (Triticum aestivum L.) is planted each year on 1.5 million ha in the low-precipitation region (150 to 300 mm) of north-central Oregon and south-central Washington. Precipitation occurs mostly (75%) from late autumn (October) to early spring (April) and the amount is highly variable from year to year. Winters are cold and intervals of frozen soil are common. Warm to hot days and co...

• Tillage intensity increased soil organic C losses and risks of wind water erosion. Occluded POM was more management-sensitive in smaller than larger sized aggregates. Maximizing plant inputs via cropping system type partially mitigated negative tillage effects. Soil disturbance from N management limited mitigating effects system. increases the susceptibility agricultural soils to erosion carb...

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...

Cropland products are of great importance in water and food security assessments, especially South Asia, which is home to nearly 2 billion people 230 million hectares net cropland area. In croplands account for about 90% all human use. extent, cropping intensity, crop watering methods, types important factors that have a bearing on the quantity, quality, location production. Currently, produced...

Water deficit is an important factor limiting crop growth all over the world. In order to evaluate genetic variation, heritability and the interrelationship between agronomic traits, twenty chickpea genotypes were cultivated in two separated randomized complete block experiments with three replications under normal irrigated and rainfed conditions. The experiments were carried out at the Agricu...

the underlying processes, capacity, and longevity of C pools in agricultural lands. One of our current challenges is to quantify the mechanisms, capacStudies have shown that increases in SOC levels are ity, and longevity of C stabilization in agricultural lands. The objectives directly linked to the return of fresh organic material of this study were to evaluate the long-term (10 yr) role of C ...