1994
DOI: 10.2134/agronj1994.00021962008600010025x
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In‐Row Subsoiling and Potassium Placement Effects on Root Growth and Potassium Content of Cotton

Abstract: One method of correcting K deficiencies in cotton (Gossypium hirsutum L.) is by in‐row deep placement of K fertilizer. At present, the mechanisms involved in cotton yield response to deep placement of K have not been elucidated. A field study was conducted in 1990 and 1991 to evaluate root development and dry matter yield of cotton as affected by in‐row subsoiling and placement of K fertilizer. The experiment was located in central Alabama on a Norfolk fine sandy loam (fine‐loamy, siliceous, thermic Typic Kand… Show more

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Cited by 43 publications
(27 citation statements)
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“…Surface compaction affected P uptake less than subsoil compaction. In irrigated cotton (Gossypium hirsutum L.) grown on a low-K, claypan soil, K uptake was not increased by deep K placement compared with surface-broadcast K when both placement treatments were in-row subsoiled, even though tillage increased subsoil root densities (Mullins et al, 1994). Deeper tillage is not always necessary or desirable for best crop growth or yields if available soil nutrients and plant root distributions are similar, as in the surface soil layer under conservation tillage systems (Hargove, 1985).…”
mentioning
confidence: 99%
“…Surface compaction affected P uptake less than subsoil compaction. In irrigated cotton (Gossypium hirsutum L.) grown on a low-K, claypan soil, K uptake was not increased by deep K placement compared with surface-broadcast K when both placement treatments were in-row subsoiled, even though tillage increased subsoil root densities (Mullins et al, 1994). Deeper tillage is not always necessary or desirable for best crop growth or yields if available soil nutrients and plant root distributions are similar, as in the surface soil layer under conservation tillage systems (Hargove, 1985).…”
mentioning
confidence: 99%
“…Mullins et al, (1994) studied K placement effects on the root growth of cotton grown on a fine sandy loam soil. Root density measurements taken in-row showed that root growth at depths > 20 cm was improved with in-row subsoil additions of K. Tupper (1992) also observed increased cotton taproot length when K fertilizer was band-applied in the subsoils of Mississippi soils with low soil-test K. On the other hand, Yibrin et al, (1993) reported that localized applications of K did not promote root growth.…”
Section: Potassiummentioning
confidence: 99%
“…Similarly, urine?ash could produce 111 and 78% more cauliflower total biomass, 55 and 64% more cabbage total biomass, and 65 and 58% more cabbage head biomass compared to the situation without fertilization and with animal manure fertilizer, respectively. The higher biomass of urine?ash fertilized plants compared to other manure-fertilized plants might be due to the additional nutrients (P, K) present in the urine and wood ash (McDonald et al 1994;Mullins et al 1994), or higher availability of N in applied urine. Similar results were reported for tomato fertilized with urine?wood ash ).…”
Section: Biomass Productionmentioning
confidence: 99%