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This research aimed to inspect the impacts of severe parasitic plants   (Orobache spp.) on grain yield, some quality characteristics, marketing   price and profitability loss of red lentil in the major lentil growing area   of south-east Anatolia. Farmer field trials were carried out in two   neighbouring fields planted with Yerli K?rm?z? (landrace) and Firat-87   varieties of lentil employing a split-plot experimental design in the Yollar   basi location of Viransehir in the 2018-2019 crop growing season. Lentil   varieties were placed into main plots and the broomrape infestations (i.e.   0, 5, 10, and 15 plants m-2) in the subplots respectively. Grain yield,   hectolitre weights and 1000-kernel weights and protein contents (%) were   scored. All grain samples were presented to randomly chosen grain purchasers   in the local commodity market and marketing price offers were scored   respectively. Results showed that broomrape infestation from zero to 15   broomrapes m-2 reduced the grain yield significantly from 2033.33 kg ha-1 to   833.33 kg ha-1 by 59%. Although being non-significant, Firat-87 (1512, 5 kg   ha-1) was found to be higher yielding than Yerli K?rm?z? (1325 kg ha-1).   Regression equations between grain yield reductions vs. broomrape   infestation ratios turned out to be significant and reliable with high   coefficients of determinations for both varieties. Some visual purchasing   criteria such as hectolitre and 1000-kernel weights were not affected   seriously. Purchasers offered very similar marketing prices for pulse grains   with all severity levels. The economic loss was huge ($555 ha-1). Regression   equations derived from grain yield vs. infestation densities were found to   be reliable with high coefficients of determinations and can be perfectly   used for yield estimates under various levels of broomrape infestations. It   was concluded that an infestation over 15% might result in a disastrous   yield loss in lentil production. Therefore, some agronomic measures must be   taken quickly.

Orobanche (Orobanche spp.) in lentil (Lens culinaris Medic.): How huge are the losses of yield, quality, marketing prices and profitability?