Selection for seed size and its impact on kabuli chickpea production

Non-Peer Reviewe

Promoting chickpea maturity through fertility management

Non-Peer Reviewe

Chickpea in semiarid cropping systems

Non-Peer ReviewedRelative to other pulse crops such as dry-pea (Pisum sativum L.) and lentil (Lens culinaris L.), chickpea (Cicer arietinum L.) is still new in western Canada. In 1999, there were 350,000 acres of chickpea seeded in Saskatchewan with more than 75% of the seeded area being located in the districts of Swift Current, Shaunavon, Moose Jaw, Rosetown, and Assiniboia (Noble 2000). Approximately 93% of the seeded chickpea area was harvested in Saskatchewan in 1999 (Statistics Canada, 1999). Due to abundant rainfall and generally cooler than normal growing conditions in 1999, some late-seeded chickpea fields did not reach full maturity. The best production success came in the southwest corner of Saskatchewan where the growing season (May to August) precipitation usually is less than 8 inches. The deeper rooting habit and the tolerance to water stress makes chickpea a winner under these adverse drought conditions. The objective of this study was to develop agronomic information for the inclusion of chickpea in cropping systems for the semiarid prairie region. The focus has been on aspects pertaining chickpea water use characteristics, stubble effect, re-cropping constraints, and other rotational considerations

Optimum plant population density for chickpea in a semiarid environment

Non-Peer ReviewedChickpea (Cicer arietinum L.), an annual grain legume, is being rapidly included in cereal-based cropping systems throughout the semiarid Canadian prairies, but information on optimum plant population density (PPD) has not been developed for this region. This study was conducted from 1998 to 2000 in southwestern Saskatchewan to determine the impact of PPD on field emergence, seed yield and quality, and harvestability of kabuli and desi chickpea compared with dry pea (Pisum sativum L.). Seed yields of all legumes increased with increasing PPD when the crops were grown on conventional summerfallow. The PPD that produced the highest seed yields ranged from 40 to 45 plants m-2 for kabuli chickpea, 45 to 50 plants m-2 for desi chickpea, and 75 to 80 plants m-2 for dry pea. When the legumes were grown on wheat stubble, the PPD that gain optimum seed yield ranged from 35 to 40 plants m-2 for kabuli, 40 to 45 plants m-2 for desi chickpea, and 65 to 70 plants m-2 for dry pea. The proportion of large-sized (>9-mm diameter) seed in the harvested seed was >70% when the kabuli chickpea was grown on summerfallow regardless of PPD, whereas the large-seed proportion decreased with increasing PPD when the crop was grown on wheat stubble. Increases in PPD advanced plant maturity by 1.5 to 3.0 days, and also increased the height of lowest pods from the soil surface by 1.4 to 2.0 cm (or 5 to 10%), with desi type receiving the greatest benefits from increased PPD

Adaptation of chickpea to high latitude areas with short growing seasons: biomass and seed yield responses

Non-Peer ReviewedThis study was conducted to determine plant establishment, biomass and seed yield of chickpea under diverse environmental and crop management conditions. Four cultivars were grown on three types of seedbed using N fertilizer rates of 0, 28, 64, 84, and 112 kg N ha-1 with and without Rhizobium inoculant (GR), at six sites in Saskatchewan, Canada. On average, chickpea grown on fallow seedbed produced the highest straw biomass, 5.8 t ha-1, or 28% greater than chickpea grown on barley stubble and 13% greater than being grown on wheat stubble. Similarly, chickpea grown on fallow produced seed yield of 2.5 t ha-1, 22 and 14% greater than chickpea grown on barley and wheat stubble, respectively. The cultivar CDC-Frontier produced biomass of 7.6 t ha-1, 13% greater than CDC-Xena and 7% greater than Amit and CDC-Anna. Increasing N rates from 0 to 112 kg ha-1 without GR increased biomass production and seed yield in a linear relationship with the slopes being 0.556, 0.475, and 0.089 (t ha-1 per kg of N fertilizer) for biomass produced on barley-, wheat-, and fallow-seedbeds, respectively, and the slopes for seed yield being 0.231, 0.226, and 0.055, respectively. CDC-Frontier produced the greatest biomass and seed yield and was the most stable cultivar across the diverse growing environments, whereas CDC-Xena had the lowest productivity with highest variability. This study showed that there was large variability in primary production of chickpea biomass and seed yield in these high latitude areas, but the variability can be minimized by adopting best management practices such as optimizing seedbed conditions, selecting cultivars with high yield potentials, and use of effective N-fixing inoculants

Chickpea seed yield in response to stubble type and fertility

Non-Peer Reviewe

Construction and validation of a questionnaire to assess student satisfaction with mathematics learning materials

Sixth Edition Technological Ecosystems for Enhancing MulticulturalityMathematics is an essential branch for the scientific development and its study is mandatory in most university degrees. However, currently the level of academic performance and motivation of students to learn this science is not the desired one. The students can use different learning tools inside and outside the math classroom, enhancing the quality of the learning materials that are designed essentially to facilitate the learning of mathematics. The present research project aims to determine the validity and reliability of a measurement instrument that allows theassessment of the satisfaction of the students with the availablelearning materials. To fulfill the objectives of this research, the method of survey was used. A study with a quantitative approach was developed, which led to the design and validation of a questionnaire by a group of 7 experts. The validation closed after applying a pilot study with 728 students. It concluded positively, obtaining nine factors that coincide with the revision of the literature: technological quality, quality of content, visual quality, didactic significance, adequacy of content, relationship between theory and practice, involvement, contribution to learning, relevance and interaction between educational actors. The results of this questionnaire provide to the international scientific community with relevant information for the design, selection, and use of study materials in the classrooms, which will contribute to raising the levels of student engagement, and their academic performance in mathematics, secondaril

Water use and water use efficiency of field pea and chickpea under the semiarid Canadian prairie conditions

Non-Peer Reviewe

Improving chickpea maturity: inoculation or fertilization?

Non-Peer Reviewe

Rhizobium inoculant formulation and placement in lentil and chickpea in the semiarid Canadian prairies

Non-Peer ReviewedLentil and chickpea are the major pulse crops grown in western Canada, but little is known about the responses of these annual legumes to rhizobium inoculant formulation, placement, and their interaction to fertilizers under semiarid environments. A field study was conducted from 1999 to 2002 on a medium-textured soil at Swift Current and on a heavy clay soil at Stewart Valley, both in Saskatchewan. The objectives were to (i) determine the effects of rhizobium inoculation and fertilization on nodule formation, N2-fixation, and their impacts on growth, yield, and seed quality in chickpea and lentil, and (ii) develop recommendations for optimizing rhizobium inoculation, P-solublizing inoculation, and fertilizer N and P application for direct-seeding of chickpea and lentil with 1-, 2-, and 3-tank delivery systems. The results of the six site-years showed that use of rhizobium inoculation increased seed yield by 35% for desi, 7% for kabuli, and 23% for lentil. Inoculation reduced desi plant population by 10%, but not in kabuli or lentil. Granular inoculant increased yield by 7% in chickpea and 8% in lentil, compared to peat-based powder inoculant. Placement of granular inoculant (seed-row vs side-banding) had the same effect in all three pulses. Starter-N and starter-P at a rate of 15 kg ha-1 each had a marginal effect on plant growth and seed yield, but a higher rate of P (34 kg P2O5 ha-1) increased kabuli seed size. Chickpea and lentil did not show any response to Penicillium bilaii (fungus contained in the products JumpStart® and TagTeam®) under the semiarid growing conditions