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United States Department of Agriculture (USDA) 2002

ALTERNATIVE CROPS FOR ARID LANDS

Alternative Crops Arid

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : ALTERNATIVE CROPS FOR ARID LANDS

Identification : TEXW-2002-06031

Pays : Etats Unis

Durée : May 1, 2002 à Apr 30, 2005

Domaine : Plant Genetic Resources ; Soil, Plant, Water, Nutrient Relationships ; Management of Range Resources ; Tropical/subtropical fruit, general/other ; Chaparral and shrub lands ; Vegetables, general/other ; Summer annual grasses ; Pasture and forage crops, general/other ;

Partenaire : TEXAS A & M UNIVERSITY- KINGSVILLE 700 UNIVERSITY BLVD. KINGSVILLE,TX 78363

Objectifs
The objectives of the proposed project are as follows. Objective 1. Develop and evaluate improved prickly pear fruit and nopalito varieties. Objective 2. Maintain plots of top-performing fruit, nopalito, and forage clones to collect data on commercial production and to serve as seed plots for commercial producers. Also to register three previously developed varieties through USDA/CSSA channels and to disseminate the germplasm as required by the registration process. Objective 3. Determine prickly pear fruit and nopalito response to plant nutrients, including NPK fertilizer, micronutrient fertilizer, and organic biosolids. Objective 4. Determine prickly pear response to irrigation, and evaluate water-use efficiency of irrigated prickly pear. Objective 5. Evaluate height and caliper of mesquite trees planted from seed obtained from trees identified as having tall and straight trunks.

Descriptif
Procedures to be followed in the proposed project are outlined below. Objective 1. Develop and evaluate improved prickly pear fruit and nopalito varieties. Much prickly pear germplasm has been propagated in the cactus plots at Texas A&M-Kingsville. All these accessions will be monitored for survival and for agronomic characteristics including, palatability of nopalitos, quantity and quality of fruit juice, suitability of plants for forage, and aesthetic value of plants for ornamental use. Objective 2. Maintain plots of top-performing fruit, nopalito, and forage clones to collect data on commercial production and to serve as seed plots for commercial producers. Ten varieties were chosen based on quality factors. Eight of the ten were fruit varieties and two were nopalito varieties. Six two-cladode cuttings were planted at 2-meter intervals in each sub-plot and each such planting was replicated three times within the production plot. Growth rate, fruit production and quality, and other characteristics will be monitored each year to acquire data that can be provided to producers. Objective 3. Determine prickly pear fruit and nopalito response to plant nutrients, including NPK fertilizer, micronutrient fertilizer, and organic biosolids. Three varieties of prickly pear from the production plots will be chosen for fertility studies. Four treatments will be established : NPK fertilizer, NPK plus micronutrients, livestock manure biosolids, and control. Each experimental unit to which a treatment is assigned will consist of five newly propagated plants. Each treatment will be replicated over four experimental units in a completely randomized design. Following the establishment of treatments, cactus growth characteristics will be monitored for at least two years. Data collected will include growth rate of pads, presence of spines, number of fruit produced, sugar content of fruit juice, and other data as deemed appropriate. Objective 4. Determine prickly pear response to irrigation. Prickly pear will be established in small plots within a sprinkler-irrigated field. As under Objective 3 above, each experimental unit will consist of five individuals, and each treatment will be replicated over four experimental units. Two treatments, irrigated and control will be established. Amounts of water applied will be measured. Soil moisture status will be monitored. Cactus growth characteristics will be monitored for at least two years and will be correlated to water application data and to TDR readings obtained from the soil. Objective 5. Evaluate height and caliper of mesquite trees planted from seed obtained from trees identified as having tall and straight trunks. About 800 seedlings were established from 27 seed source. Beginning in the year 2002, these trees will be evaluated annually to determine their growth rates, and the length, straightness, and caliper of their trunks.

Présentation : USDA

Page publiée le 8 décembre 2015, mise à jour le 30 octobre 2017