Effects of Full Straw Incorporation on Soil Fertility and Crop Yield in Rice-Wheat Rotation for Silty Clay Loamy Cropland

Abstract

This 2-year field experiment investigated the effects of full straw incorporation on soil fertility and crop yield in a rice-wheat (Oryza sativa L.–Triticum aestivum L.) rotation on sandy, loamy soil. Two treatments were tested: (i) straw removal (CK) and (ii) straw incorporation (STR). The STR significantly increased the wheat yield by an average of 58% compared with CK; however, no significant difference was found in the rice yield. Soil available nitrogen, phosphorus, and potassium in the 0–20 cm soil layer increased by more than 15% with STR compared to CK. The soil cation exchange capacity and organic carbon in the 0–20 cm soil layer increased by 8% and 22%, for STR compared to CK, respectively. Straw incorporation significantly elevated the soil saturated water content but decreased the soil bulk density compared with CK. Soil aggregates >2 mm were significantly increased after straw return. STR also notably increased the soil urease, invertase, and catalase activities in the 0–15 cm soil layer by 11.4%, 41.0%, and 12.9%, respectively, and the soil microbial carbon and nitrogen contents in the 0–20 cm soil layer by 59% and 54%. Therefore, full straw incorporation could significantly improve soil fertility and maintain crop yields for the study area.

Magnesium accumulation, partitioning and remobilization in spring maize (Zea mays L.) under magnesium supply with straw return in northeast China

“…Averaged over 2 years, the straw yield and grain yield under the JM3 treatment were 10.9% and 12.33%, respectively, higher than that without straw (WM0) treatment (Table ). The increase of yield and straw was probably due to increased soil cation exchange capacity and organic carbon at 0–20 cm soil layer . This study confirmed that supply of straw improved grain and straw yield of the maize, which was consistency with the results of Gami et al ., who demonstrated that straw application enhanced sufficient Mg nutrients, increased chlorophyll content, and promoted dry matter accumulation and yield in maize.…”

“…The increase of yield and straw was probably due to increased soil cation exchange capacity and organic carbon at 0-20 cm soil layer. 74 This study confirmed that supply of straw improved grain and straw yield of the maize, which was consistency with the results of Gami et al, 75 who demonstrated that straw application enhanced sufficient Mg nutrients, increased chlorophyll content, and promoted dry matter accumulation and yield in maize. Therefore, the application of Mg fertilizer with straw return can enhance grain and straw yield in spring maize.…”

Soil Physicochemical Properties, Water Use Efficiency and Productivity of Wheat - Maize Yields under Clay Soil Conditions as Affected by Rice Straw and Compost Application

“…It's called an interactive part of the soil organic component that is mineralized within a couple weeks or months under suitable conditions. The results matched with El-Ghamry et al (2015) and Zhao et al (2019). The organic forms of nitrogen that is present in a form of macromolecules gets slow release to a non-organic form, these plants were higher in soils amendments with compost rice straw alone or in addition to mineral fertilizers.…”

“…Application of rice straw improves physical characteristics (Bd and Tp). Yang et al (2016) and Zhao et al (2019) mentioned that straw return also can improving the physical characteristics of the soil, such as increased hydraulic conductivity (Hc) and lake of bulk density (Bd).…”

Response of rice to different organic and inorganic nutrient sources at Parwanipur, Bara district of Nepal

“…Positive effect of straw incorporation was also found by Kumari et al (2018) in rice-wheat cropping system. Zhao et al (2019) compared straw removal with straw incorporation in rice-wheat cropping system and found that increase in wheat yield was significant and rice was not significant. Zhao et al (2019) found the positive influence of straw incorporation on soil aggregation and enzyme activities.…”