Long-term effects of cover crops on physical-hydric properties of compacted soil

IF 1.5 4区农林科学 Acta Scientiarum-agronomy Pub Date : 2023-08-23 DOI:10.4025/actasciagron.v45i1.62390

Deonir Secco, Doglas Bassegio, Araceli Ciotti de Marins, Bruna de Villa, Luiz Antônio Zanão Junior, Tiago Roque Benetoli da Silva, Affonso Celso Gonçalves Junior

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Abstract

The screening of cover crops is essential for improving the physical-hydric properties of compacted soils. This study aimed to evaluate the effects of mixed or single cover crops on improving the physical-hydric properties of compacted Oxisol. Species with tap-rooted and fibrous-rooted rooting patterns were evaluated. The species included pearl millet (Pennisetum americanum), pigeon pea (Cajanus cajan), sunn hemp (Crotalaria spectabilis), velvet bean (Mucuna pruriens), white oat (Avena sativa), black oat (Avena strigosa), rye (Secale cereale), black oat + forage turnip (Raphanus sativus), black oat + white lupin (Lupinus albus L.), and black oat + group pea (Pisum arvense L.). Mixing cover crops did not improve the physical properties of the soil. The tap-rooted pigeon pea effectively reduces bulk density and increases porosity and saturated hydraulic conductivity (Ksat) in compact soils. The selection of cover crops with characteristics that improve soil physical-hydric properties is crucial for compacted areas.

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覆盖作物对压实土壤物理-水分特性的长期影响

覆盖作物的筛选对改善压实土壤的物理-水分特性至关重要。本研究旨在评价复盖作物和单盖作物对改善压实土理化性状的影响。对根型和纤维型两种植物进行了评价。品种包括珍珠粟(Pennisetum americanum)、木豆(Cajanus cajan)、太阳麻(Crotalaria spectabilis)、丝绒豆(Mucuna pruriens)、白燕麦(Avena sativa)、黑燕麦(Avena strigosa)、黑麦(Secale cereale)、黑燕麦+饲料萝卜(Raphanus sativus)、黑燕麦+白露苹(Lupinus albus L.)和黑燕麦+豌豆(Pisum arvense L.)。混合覆盖作物并没有改善土壤的物理性质。垂根豇豆可有效降低致密土的容重，提高孔隙率和饱和导电性。选择具有改善土壤物理-水分特性特征的覆盖作物对压实地区至关重要。

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来源期刊

Acta Scientiarum-agronomy AGRONOMY-

CiteScore

2.30

自引率

0.00%

发文量

期刊介绍： The journal publishes original articles in all areas of Agronomy, including soil sciences, agricultural entomology, soil fertility and manuring, soil physics, physiology of cultivated plants, phytopathology, phyto-health, phytotechny, genesis, morphology and soil classification, management and conservation of soil, integrated management of plant pests, vegetal improvement, agricultural microbiology, agricultural parasitology, production and processing of seeds.