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Izúcar de Matamoros, Mexico

Moreno-Resendez A.,Antonio Narro Agrarian Autonomous University | Carreon-Saldivar E.,Antonio Narro Agrarian Autonomous University | Rodriguez-Dimas N.,Antonio Narro Agrarian Autonomous University | Reyes-Carrillo J.L.,Antonio Narro Agrarian Autonomous University | And 3 more authors.
Emirates Journal of Food and Agriculture | Year: 2013

Different studies have suggested that the use of vermicompost as part of the plant growth media can provide nutrients and retain moisture while promoting the development of crops. To corroborate this assumption we tested the effects of vermicompost supplementation to tomato (saladette type) under greenhouse conditions. The evaluated treatments included four mixtures (T1, T2, T3, and T4) of vermicompost and river sand, with volume ratios 0:1, 1:1, 1:2 and 1:3, respectively. Physical and chemical tests were performed in each mixture to determine nutritional elements (N, P, K, Ca, Mg, Na, Fe, Cu, Zn, Mn, organic matter, pH, texture, cationexchange capacity, electric conductivity, and apparent density) and water holding capacity. Treatment with 0:1 volume ratio (T1) was used as control, and it was fertilized with a nutrient solution [KNO3, Ca(NO3)2, Mg(NO3)2, phosphoric acid concentrate, and multi Maxiquel (Bioagro ®)]. Seeds were sown in polystyrene trays with 200 cavities, padded with peat moss; seedlings were transplanted 37 days after sowing in 20 L black plastic bags. Harvest, including up to the fifth cluster, was performed manually, when the fruits reached a pink color. The treatment effects on tomato were evaluated considering the number of fruits, number of locules, equatorial and polar diameters, pulp thickness, soluble solids, fruit weight and fruit yield. The four treatments were repeated eight times in a completely randomized design. Data were statistically analyzed by analysis of variance and means were separated by the LSD0.05 test. Five of the variables studied - number of fruits, number of locules, soluble solids, pulp thickness, and yield- showed highly significant difference (P=0.01) among treatments; the polar diameter showed significant differences (P=0.05), and both equatorial diameter and weight of fruit were not significantly different among the substrates tested. The maximum yield (50.29 t•ha-1) was obtained in treatment T2 with a water volume of 40 L•pot-1, followed by T1 (49.93 t•ha-1), applying a water volume of 95.72 L•pot-1. Derived from the results of the best treatment (T2), and under conditions described, the productivity was estimated in 30.66 kg•m-3. Since no synthetic fertilizers were used during the crop production, the results indicate that the vermicompost was able to satisfy the nutrient demand of tomato plants and reduces the volume of water required by this crop. Source


Pedroza-Sandoval A.,National Autonomous University of Mexico | Yanez-Chavez L.G.,National Autonomous University of Mexico | Sanchez-Cohen I.,National Autonomous University of Mexico | Sanchez-Cohen I.,Instituto Nacional de Investigaciones Nucleares | Samaniego-Gaxiola J.A.,Research Center Regional Norte Centro
Revista Fitotecnia Mexicana | Year: 2015

The increasing of frequency and intensity of drought are the most critical factor in the agricultural production in rainfall areas. Evaluate different doses of hydrogel and vermicompost as soil moisture retainers and its impact on photosynthesis and the production of maize (Zea mays L.) was the objective in this study, in Bermejillo, Durango. Randomized block design in a split plot arrangement was used. Hydrogel doses of 0, 12.5 and 25 kg ha-1 were applied in main plots, and doses of vermicompost of 0 and 20 t ha-1 were applied in subplots. Applying 12.5 and 25 kg ha-1 of hydrogel favored the growth and productivity of corn, it increasing the average 31.5 % the moisture content of the soil, in relation to the control. Grain yield increased 44.7% when applied 25 kg ha-1 of hydrogel to produce 19.1 t ha-1 compared to 13.2 t ha-1 produced by the control. This was associated with better ear size and higher rates of photosynthesis and biomass production. Vermicompost did not influence the growth and yield of corn. Source


Najera M.D.J.F.,Campo Experimental Zacatecas | Gutierrez R.A.S.,Campo Experimental Zacatecas | Chairez F.G.E.,Campo Experimental Zacatecas | Luna R.G.,Campo Experimental Zacatecas | And 2 more authors.
Revista Mexicana De Ciencias Pecuarias | Year: 2016

The objective was to determine forage yield and quality of vetch mixtures with barley, oat and triticale in two seeding ratios (65:35; 35:65) at four phenological stages. To this end, a randomized block design with factorial array (3×4×4) and four replications was established. The greatest dry matter yield was obtained from the oat-vetch mixture at the grain doughy stage of maturity (16.6 t ha-1; P<0.00), while the seed proportion with the highest production was from the oat-vetch (65:35) ratio with 19.9 t ha-1 during the dough grain stage. The highest amount of crude protein was obtained from the oat-vetch (178 g kg-1 MS) and triticale-vetch (161 g kg-1 MS) mixtures during booting stage. The monoculture vetch and oats-vetch (35:65) proportion, both had lower amounts of neutral detergent fiber at the mature grain stage (P<0.001). The oat, vetch and triticale monocultures showed the lowest acid detergent fiber during milky grain stage (P<0.001). The greatest percentage of TDN was observed in vetch monoculture and its mixtures with barley (65:35) during the milky grain stage, respectively (P<0.001). The monoculture vetch provided highest values for NEL and RFV (P<0.001). In conclusion, the forage yield and quality of vetch mixtures with barley, oat and triticale depend on the maturity stage. Also, the oat-vetch mixture showed the greatest dry matter yield and high CP concentration. In addition, forage relative value was higher during the mature grain stage. Source


Granados-Sanchez D.,National Autonomous University of Mexico | Martinez-Salvador M.,Research Center Regional Norte Centro | Lopez-Rios G.F.,National Autonomous University of Mexico | Borja-De La Rosa A.,National Autonomous University of Mexico | Rodriguez-Yam G.A.,National Autonomous University of Mexico
Revista Chapingo, Serie Ciencias Forestales y del Ambiente | Year: 2013

The oregano, Lippia graveolens H. B. K., is a plant adapted to arid conditions with the ability to thrive under varying degrees of harvesting pressure. In Mapimí, Durango, the plant has been gathered and marketed for years and provides a vital source of income for families that harvest it, although wholesalers reap the biggest share of the profits. In the Mapimí region, several producing areas were evaluated in order to determine the dynamics of harvesting and their effects on the plant. For this, field trips, sampling and delineation of oregano distribution areas were conducted. In addition, the production process and marketing channels were analyzed in order to design a management alternative that ensures the sustainability of the activity. The production and marketing process was studied through open interviews with producers, field trips and visits to the processing and marketing companies, as well as the intermediaries involved in different stages of the process. Source


Ramos A.P.,Instituto Nacional de Investigaciones Nucleares | Castaneda F.G.,Instituto Nacional de Investigaciones Nucleares | Hernandez G.N.,Research Center Regional Norte Centro | Del Rosario Tovar Gomez M.,Research Center Regional del Centro | And 2 more authors.
Revista Mexicana De Ciencias Pecuarias | Year: 2012

Six corn populations drawn from outstanding forage quality germplasm, and 15 of their direct crosses were assessed in four sites located between 1,117 and 1,932 m asl. The purpose of the present study was to determine general and specific combining ability and mid parent heterosis for whole plant dry matter (TDM), ear dry matter (EDM), stover dry matter (SDM), in vitro dry matter digestibility (IVDMD), neutral detergent fiber content (NDF) and crude protein (CP). Populations showed significant differences for all dry matter yield characteristics, but not for forage quality, while crosses showed differences for EDM and IVDMD. General combining ability effects (GCA) were high and significant only for TDM, while specific combining ability effects (SCA) were significant for IVDMD. Population P3 had the highest GCA for TDM (0.66 t ha -1) and P5F for EDM (0.49 t ha-1). Early cross P1 *P2 had the highest heterosis for TDM (17.6 %) and highly significant SCA effects for both TDM and IVDMD (1.48 t ha-1 and 22.6 g kg-1, respectively), while crosses P2*P5F, P1 *P4 and P1*P6F had high mid parent heterosis for EDM, with values ranging from 18.6 % to 26.2 %. None of the crosses showed mid parent heterosis for forage traits of importance. Source

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