Show simple item record

dc.contributor.authorMohammed, Robert Ali,1945-*
dc.creatorMohammed, Robert Ali,1945-en_US
dc.date.accessioned2011-11-28T14:00:38Z
dc.date.available2011-11-28T14:00:38Z
dc.date.issued1975en_US
dc.identifier.urihttp://hdl.handle.net/10150/191626
dc.description.abstractWater management of short-season, high-density cotton was studied for three seasons (1972, 1973 and 1974). Various irrigation schedules and nitrogen fertilizer application rates were examined. Data on amounts of water applied, yield, boll and fiber properties, soil nitrate levels and cotton petiole nitrate levels were collected. Cotton was planted on 40-inch beds with two plant rows per bed 12 inches apart. For 1972, two varieties were planted, Anderson- Clayton 1764 and Deltapine 16; the plant population was 60,000 plants per acre. Deltapine 16 was the only variety planted in 1973 and 1974 with plant populations of 50,000 and 60,000 plants per acre, respectively. The 1972 experiment showed that Deltapine 16 was better suited to the short-season, high-density cotton production system than Anderson-Clayton 1764. In 1973 and 1974, experiments indicated that available soil moisture depletion should not exceed 50-55 percent. Also, criteria (based on available soil moisture) of when to irrigate should not be varied throughout the season. Results suggest that yields can be maintained with early irrigation termination if soil moisture, before irrigation, is kept at a higher level than is the normal practice. Application of 100 pounds of N per acre seemed to adequately meet the crop's needs for the season.
dc.language.isoenen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshCotton -- Irrigation.en_US
dc.subject.lcshCotton -- Fertilizers.en_US
dc.titleWater management of short-season high-density cottonen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.contributor.chairFangmeier, Delmar D.en_US
dc.identifier.oclc212907274en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineSoils, Water and Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.nameM.S.en_US
dc.description.notehydrology collectionen_US
refterms.dateFOA2018-08-24T11:58:13Z
html.description.abstractWater management of short-season, high-density cotton was studied for three seasons (1972, 1973 and 1974). Various irrigation schedules and nitrogen fertilizer application rates were examined. Data on amounts of water applied, yield, boll and fiber properties, soil nitrate levels and cotton petiole nitrate levels were collected. Cotton was planted on 40-inch beds with two plant rows per bed 12 inches apart. For 1972, two varieties were planted, Anderson- Clayton 1764 and Deltapine 16; the plant population was 60,000 plants per acre. Deltapine 16 was the only variety planted in 1973 and 1974 with plant populations of 50,000 and 60,000 plants per acre, respectively. The 1972 experiment showed that Deltapine 16 was better suited to the short-season, high-density cotton production system than Anderson-Clayton 1764. In 1973 and 1974, experiments indicated that available soil moisture depletion should not exceed 50-55 percent. Also, criteria (based on available soil moisture) of when to irrigate should not be varied throughout the season. Results suggest that yields can be maintained with early irrigation termination if soil moisture, before irrigation, is kept at a higher level than is the normal practice. Application of 100 pounds of N per acre seemed to adequately meet the crop's needs for the season.


Files in this item

Thumbnail
Name:
azu_td_hy_e9791_1975_419_sip1_w.pdf
Size:
3.157Mb
Format:
PDF
Description:
azu_td_hy_e9791_1975_419_sip1_w.pdf

This item appears in the following Collection(s)

Show simple item record